If you're looking for anime similar to Marginal#4: Kiss kara Tsukuru Big Bang, you might like these titles.
Six Gravity and Procellarum are two rival male idol groups who happen to live in the same dorm. Six Gravity is made up of young men who represent the months of December to May, while Procellarum’s members represent June to November. Follow the daily lives of these twelve young men as they deal with the stresses of idol-hood, school, and living together.
The Dream Festival is the stage that all idols dream of singing on, with their professional debut on the line. In order to get there, idols work their hardest every day to perfect their performance... and the key to coming out on top is the Dream Festival Cards sent by fans to their favorite idols. Receiving these Cards makes the idols who make it to the stage shine even brighter. Now head to the Dream Festival with your Dream Festival Card in hand for the idol you love most!
If you enjoy it, then, you might also enjoy the other one. Since they are both about an unit and their life in general, and their rivalry against other units, music and idols, you might enjoy them both. There is also some comedy and the hard life of being an idol !
When Haruka gets the chance to take the entrance exam for Saotome Academy for the Performing Arts, it seems as though she’s one step closer to her dream of composing songs for her favorite singer, Hayato. However, this is no gleeful high school musical experience, and Haruka’s hiding a dreadful secret that may silence her musical ambitions forever. And even if she does get into Saotome, the competition will be more brutal than going on Japan’s Top Idol!
One month after the Nautilus disaster, reconstruction in industrial London is progressing, and a celebration is about to be held at Buckingham Palace.
Musical prodigy, Kanade Kohinata, has found herself adrift and unable to regain her creative focus. All that changes, however, when childhood friend Ritsu Kisaragi insists that Kanade and his younger brother Kyouya, both transfer to the prestigious Seiso Academy. The super-competitive orchestra club is in contention for the National Championships, and amidst the fire of competition, Kanade may find herself kindling more than just a passion for music!